<template>
  <div class="person">
    <h1>情况4: </h1>
    <h2>姓名: {{ person.name }}</h2>
    <h2>年龄: {{ person.age }}</h2>
    <h2>汽车: {{ person.car.c1 }} , {{ person.car.c2 }}</h2>
    <button @click="changeName">修改名字</button>
    <button @click="changeAge">修改年龄</button>
    <button @click="changeC1">修改第一台车</button>
    <button @click="changeC2">修改第二台车</button>
    <button @click="changeCar">修改整个车</button>
  </div>
</template>

<script setup lang="ts" name="Person">
import {reactive, watch} from "vue";

let person = reactive({
  name: "张三",
  age: 23,
  car: {
    c1: '奔驰',
    c2: '宝马'
  }
})

function changeName() {
  person.name += '~'
}

function changeAge() {
  person.age += 1
}

function changeC1() {
  person.car.c1 = '奥迪'
}

function changeC2() {
  person.car.c2 = '大众'
}

function changeCar() {
  person.car = {c1: '雅迪', c2: '爱玛'}
}

// 监视多个
watch([() => person.name, () => person.car.c1], (newValue, oldValue) => {
  console.log('变了', newValue, oldValue)
})


</script>


<style scoped>
.person {
  background-color: skyblue;
  box-shadow: 0 0 10px;
  border-radius: 10px;
  padding: 20px;
}

button {
  margin: 0 5px;
}
</style>